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Think Xiaflex is safe? Read this
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08/24/2009 23:04
Guest

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08/24/2009 23:04
Guest

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Think Xiaflex is safe? Read this

http://tinyurl.com/mh95ux

08/25/2009 11:17
patandpaula 
08/25/2009 11:17
patandpaula 
Re: Think Xiaflex is safe? Read this

Ok, well that part about losing a finger pretty much did it for me. Paula

08/25/2009 12:35
wach 

Administrator

08/25/2009 12:35
wach 

Administrator

Re: Think Xiaflex is safe? Read this

Tendon rupture is a potential issue also for NA and surgery. The critical number is how often it happens and that obviously depends on the skill of the doctor. Though Auxilium talks about "educating the surgeon base" my feeling is that Xiaflex will not only be applied by surgeons but also by other MDs. Training them how to avoid side effects like tendon rupture makes a lot of sense to me.

The article cites 0.14 % tendons ruptures per shot. As fingers might need more than one shot it might be in the 0.15 - 0.20 % range per finger. The according percentage for NA is about 0.01 % (http://www.dupuytren-online.info/NA_side_effects.html). Surgery reports e.g. 0.2 % tendon damage (more frequent than rupture, i.e. actual rupture would be less!) (http://www.dupuytren-online.info/surgery...s_denkler_2.htm). The statistics for Xiaflex is certainly not very good, 3 ruptures doesn't make good statistics, so we need to wait until more patients have been treated. My concern would be that the numbers of CORD and JOINT studies are certainly from trained personell. It might be worse with less or not trained doctors.

Wolfgang

08/26/2009 00:19
ArtistHands

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08/26/2009 00:19
ArtistHands

not registered

Re: Think Xiaflex is safe? Read this

In the article at the tiny url there is this statement

"Kaplan also described nerve injury as surprisingly low and added that no one reported temporary numbness."

I was in the III stage clinical study and reported numbness in my finger. It was temporary and it was minor (lasting about six weeks) - but I did have numbness - so Kaplan is incorrect in his statement.

08/26/2009 05:45
Randy_H 
08/26/2009 05:45
Randy_H 

Re: Think Xiaflex is safe? Read this

By comparison, how many of us *have* been told about Xiaflex, even though it is not yet available, and the latest reports indicate that Phase III trials show that Xiaflex is probably not as safe as NA? My guess would be that CHS speak far more about it than NA.

08/26/2009 15:22
Mike S

not registered

08/26/2009 15:22
Mike S

not registered

Re: Think Xiaflex is safe? Read this

Being averse to all thing medical. the fact that Xiaflex generally requires a minimum of two interventions vs. just one for NA is EXTREMELY off-putting. For me (and presumably others), Xiaflex would have to have some other major comparative advantage vis-a-vis NA to justify its use in lieu of NA . e.g. more effective, reduced risk of complication, lower recurrence rate, less expensive, less pain/discomfort, faster recovery, etc. From what I have gleaned thus far, Xiaflex offers none of these advantages.

08/26/2009 20:36
jimh 
08/26/2009 20:36
jimh 
Re: Think Xiaflex is safe? Read this

One advantage would be wider availablity.

It's a " tested product" being marketed to hand surgeons, rather than a controversial new technique they'd have to go somewhere to learn - at their own expense. Insurance companies may like it for this reason too.

I recently had NA at Mayo - quite an expensive procedure at a total of $3K, of which insurance only paid half because Mayo isn't in my provider network. If - next time - I could accomplish the same thing closer to home, with Xiaflex injections by an in-network surgeon, I'd save $1500.

08/26/2009 23:22
Mike S

not registered

08/26/2009 23:22
Mike S

not registered

Re: Think Xiaflex is safe? Read this

Good point about the (potentially) wider availability of Xiaflex.

Excluding travel, my NA cost [only] around $700-800 which (fortunately) was reimbursed by my insuarance company.

08/27/2009 00:42
jimh 
08/27/2009 00:42
jimh 
Re: Think Xiaflex is safe? Read this

The surgeon at Mayo did an office interview in the morning, followed by x-rays and ultrasound, then the actual procedure - and I also had a splint made by PT. All in one day.

The ultrasound showed him the exact locations of the major nerves and blood vessels, adding a margin of safety.

08/27/2009 09:47
fingers 
08/27/2009 09:47
fingers 
Re: Think Xiaflex is safe? Read this

The talk about losing a finger was total unfounded speculation, and from what I understand, a misleading exaggeration of what could happen even in a worst case. If Xiaflex was that destructive to all tissue, it seems like simply injecting it anywhere in the hand would be a disaster. I think it was not good journalism to include that comment. I'd also point out that Xiaflex is in trials for frozen shoulder, and if that finger loss was remotely possible, we'll be hearing of entire arms falling off. Somehow, I don't think that is going to happen.

The tendon rupture issue is more real. My sense is that to some degree, that happened simply because the procedure is utterly new. It would be useful to have the details of how they happened, and the expertise of the person doing the injections, and the injectionists narrative of what happened. Without that knowledge, it is very hard to reasonably assess and extrapolate about the future.

I also get a strong sense of conflicted interests in the reporting, especially from hand surgeons. It is, rather predictably, not surprising that some are busy building arguments aimed at limiting the use of Xiaflex to their specialty. If I were a surgeon doing a lot of old-fashioned fasciectomies, you can bet I would be interested in keeping as much of the business to myself as possible after the introduction of a new treatment.

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